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研究生:裴笛翰
研究生(外文):Ti-Han Pei
論文名稱:天線輻射對電磁干擾的影響分析
論文名稱(外文):EMI Effect from Antenna Radiation
指導教授:張道治張道治引用關係
指導教授(外文):Dau-Chyrh Chang
口試委員:余文華劉智群
口試委員(外文):Wenhua YuJi-Chyun Liu
口試日期:2011-08-11
學位類別:碩士
校院名稱:亞東技術學院
系所名稱:資訊與通訊工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:英文
論文頁數:70
中文關鍵詞:電磁干擾印刷電路板PIFA
外文關鍵詞:EMIprinted circuit boardPIFA
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在本論文中,分成四部分來做探討:第一部分,先設計應用於GSM900 MHz、1800 MHz的PIFA天線,模擬及量測分析當人體模型靠近天線時,對天線特性的影響,第二部分,利用GEMS模擬軟體,分析印刷電路板受鄰近天線輻射引起之電流分佈及產生的電磁干擾問題,當天線輻射時,對於四周的電子元件產生電磁干擾,將會降低通訊系統的接收靈敏度;第三部分,量測印刷電路板中電磁干擾之電場及電流分佈,在傳統量測方式,量測時探棒與待測物距離太近時易產生耦合效應,距離較遠時,則電場或電流分佈位置之解析度不佳,無法精確預估受干擾之位置,本論文採用近場量測方式,將量測之近場參數,轉換成印刷電路板的高解析度電流分佈;在最後一部分,我們將針對電磁干擾問題加以除錯改良,以減少電磁干擾、耦合效應及解析度不佳等問題,增加系統之接收靈敏度。
This paper will divide four parts, the first part design a PIFA antennas for GSM900 and GSM1800, and discussing antenna characteristics when human body is close to the antenna. The second part is using GEMS simulation tool to analyze current distribution and electromagnetic interference of printed circuit board by the nearby antenna. When the antenna radiation, the antenna radiation produce the electromagnetic interference on the electronic components, it will be reduce the receiver sensitivity of communication systems. The third part is measurement of printed circuit board for electromagnetic interference and electric field or current distribution. In the traditional measurement method, if the near field probe closes the print circuit board, it will cause the mutual coupling problem, If the near field probe is far away the print circuit board, it will easy to identify the defect position, it can’t estimate the location of interference, this thesis will use surface scan method to measure near field parameters, and improve traditional measurement method. In the final part, it will debug electromagnetic interference to reduce electromagnetic interference and mutual coupling problem, it will increase receiver sensitivity of communication systems.
博碩士論文授權書.........................................................................................I
論文封面...............................................................................................II
論文指導教授推薦書......................................................................................III
論文口試委員審定書.......................................................................................IV
誌謝....................................................................................................V
中文摘要................................................................................................VI
English Abstract......................................................................................VII
Contents.............................................................................................VIII
List of Figures.........................................................................................X

Chapter 1 Introduction
1.1 Introduction........................................................................................1
1.2 Research motivation.................................................................................1
1.3 Background................. ........................................................................4
1.4 Outline of thesis...................................................................................7

Chapter 2 Basic Antenna Theory
2.1 Introduction.......................................................................................11
2.2 Basic of monopole antenna..........................................................................11
2.3 Basic of Inverted F ntenna.........................................................................12
2.4 Basic of meander-line antenna......................................................................13
2.5 Summary............................................................................................14

Chapter 3 Design 900/1800 MHz PIFA Antenna on a Mobile Phone with a Proximate Head
3.1 Introduction.......................................................................................17
3.2 PIFA antenna design................................................................................17
3.3 Simulation of PIFA antenna with head model.........................................................18
3.4 Simulation and measurement results.................................................................19
3.5 Summary............................................................................................20

Chapter 4 Simulation and Measurement of RE for PCB
4.1 Introduction.......................................................................................40
4.2 Design and analysis of PIFA antenna for the electric field
distribution...........................................................................................40
4.3 Simulation and test results........................................................................41
4.4 Summary ...........................................................................................42

Chapter 5 Build High Resolution Circuit Image
5.1 Introduction.......................................................................................49
5.2 Diffraction field by NF aperture...................................................................49
5.3 Simulation and test results........................................................................52
5.4 Summary............................................................................................53

Chapter 6 Conclusion
Conclusion.............................................................................................67

References.............................................................................................68

[1]GEMS, 3-D High Performance parallel EM simulation Software, www.2comu.com.
[2]Chuan-Fu Wu “EMC control and prevention” 2008
[3]Yonh-Zong Chen, Ren-Yu Gu, “The Study of Measurement Theorem and Prevention over Electromagnetic Interference
Environment and RF Noise” Da-Yeh University, 2005
[4]Wen-Shi Lee, Yi-Shen Chen,“900/1800MHz dual-band ceramic chip antenna bandwidth improvement and equivalent circuit
simulation and analysis” National Cheng Kung University, 2005
[5]Chi-Fang Huang, Yao-Ting Huang, “Realization of Compact Quadrifilar Helix Antennas” Tatung University, 2008
[6]Szu-shun Pai, “Strategy of EMI Reduction for Power Ground Planes in Multi-Layer PCB Design”, Tatung University,
2006
[7]Wein-Long Lin, “Design and Analysis of Standard Noise Source for Electromagnetic Interference”, Da-Yeh University,
2004
[8]Cheng-Wei Chen, “Antenna Design of Mobile Communication and Analysis of SAR Simulation” pp.108-131. January. 2011.
[9]Wei-Lu Hung, “Design and Study of Small PIFA Structures” pp.18-32. June. 2007.
[10]Yin-Hsin Chang, “Design of Compact Printed Dual-band and Ultra-wideband Monopole Antenna” pp.26-33. July, 2008.
[11]Chun-Yi Chen, “Analysis and Build the Planar Near-Field Measurement System” pp.20-37. June, 2003.
[12]Fang-I Hsu, “Planar Near-Field to Far-Field Transformation and PIFA Antenna Suitable for Wireless LAN” pp.9-23.
June, 2002.
[13]Liang-Chen Kuo, “Numerical Study of EM Interaction of Handset Antennas with Human Head Models and Planar WLAN
Antenna Design by Using FDTD Method” pp.68-80. January, 2007.
[14]Jong-Pil Lee and Seong-Ook Park, “The Meander Line Antenna for Bluetooth” pp.1-3. January, 2002.
[15]Shih-Yi Chan, “The Application of Meander-Line Antenna to Mobile Communication” pp.35-61. June, 2005.
[16]Ken-Huang Lin, “Study and Implementation of the Log-Periodic Dipole Array Antenna for Electromagnetic
Compatibility” pp.22-32. June, 2001.
[17]Yen-Chi Shen, “Printed Triple-Band Antenna Utilizing Modified Open-Loop and Switched Beam Antenna for Wireless
Communication Applications” pp.20-29. July, 2006.
[18]Kun-Cheng Lai, “Design and Measurement of Ultra Wide Band Antenna” pp.21-37, July, 2008.
[19]Wen-Shan Chen, “Studies of Dual-Band and Broadband Printed Slot Antennas” pp.57-69, January, 2001.
[20]Yu Ting, Wu, “Study of Correlating TEM Cell and OATS Measurements for the Radiated Emission of IC” pp.23-39, July,
2007.
[21]Jiunn-Nan Hwang, “Effect of Ground Bounce Noise on the Power Integrity and EMI Performance in Multi-Layered High-
Speed Digital PCB:FDTD Modeling and Measurement” pp.10-24, June, 2002
[22]Guo-Siang Hsiao,”The Application of Spread Spectrum Techniques in IC EMC Design” pp.50-69, July, 2008
[23]Chien-Hsun Chen,”TheEffect of Electromagnetic Wave and Human Head” pp.1-6, July, 2010
[24]John D. Kraus, Ronald J. Marhefka, Antenna for All Applications

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